My first guess would be autovivification: $h{$_} behaves differently in lvalue and rvalue contexts,...

True, but currently the usage of X // Y as an lvalue results in a compile error. I'm not sure if this is any different in overloading.

Update:
One overlooked detail:

Also any classes that provide overloading of these operators...

Logical operators cannot be overloaded.

Greetings,
🐻

$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$

In reply to Re^2: Logical/defined or as lvalue by jo37
in thread Logical/defined or as lvalue by jo37

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